Blake's Hydram Housings For Small Hydrams Below are the details for foundations and housings for Hydrams up to No. 5. DimensionHydram Size - >1233.545 AHydram Height840770890102010401220 BDrive Pipe Bore3238506475100 CChannel Width300300380460460460 DWaste Valve Height125150175200225250 EEnclosure Length and Width107010701200120015301530 FEnclosure Height107010701200120013701680 GBase Thickness150150225225225225 HDrain Pipe Bore7575100100100150